- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 31/08 - Active carbon
Patent holdings for IPC class C01B 31/08
Total number of patents in this class: 431
10-year publication summary
|
20
|
8
|
7
|
6
|
5
|
0
|
0
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 10558 |
34 |
| Blucher GmbH | 176 |
14 |
| British American Tobacco (Investments) Limited | 1001 |
10 |
| Kuraray Co., Ltd. | 3621 |
10 |
| Carbon Technology Holdings, LLC | 234 |
6 |
| Sony Corporation | 29887 |
5 |
| Hyundai Motor Company | 25119 |
5 |
| Albemarle Corporation | 469 |
5 |
| Pneumatic Processing Technologies, LLC | 8 |
5 |
| Saudi Arabian Oil Company | 14398 |
5 |
| Dow Global Technologies LLC | 11072 |
4 |
| Inha-Industry Partnership Institute | 168 |
4 |
| Nichias Corporation | 407 |
4 |
| William Marsh Rice University | 1082 |
4 |
| Philip Morris Products S.A. | 8342 |
3 |
| Fujitsu Limited | 16810 |
3 |
| Korea Advanced Institute of Science and Technology | 4725 |
3 |
| Arcactive Limited | 28 |
3 |
| Biogenic Reagents LLC | 11 |
3 |
| Calgon Carbon Corporation | 257 |
3 |
| Other owners | 298 |